PT-2026-51662 · Geovision · Gv-I/O Box 4E

Kelly Patterson

+2

·

Published

2026-06-24

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Updated

2026-06-24

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CVE-2026-12851

CVSS v3.1

9.1

Critical

VectorAV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Multiple OS command injection vulnerabilities exist in the libNetSetObj.so functionality of GeoVision GV-I/O Box 4E 2.09. A specially crafted network packet can lead to command execution. An attacker can send a network request to trigger this vulnerability.
libNetSetObj.so is an internal library used by various binaries on the device to configure the network stack (start and stop various services, configure IP, Netmask, gateway, dns, etc.)

CNetSetObj::m F n Set DNS Addr command injection

The following function can take up to two addresses, performs no sanitization and then calls system. This is a classic command injection vulnerability. The function is reachable from both the network-exposed DVRSearch service and the Network.cgi endpoint.
int fastcall CNetSetObj::m F n Set DNS Addr(CNetSetObj *this, char *dns1, char *dns2)
{
int result; // r0
char v5[80]; // [sp+0h] [bp-50h] BYREF
if ( !dns1 )
result = 0;
if ( dns1 )
{
sprintf(v5, "/bin/echo nameserver %s > /etc/resolv.conf", dns1); // attacker controlled dns1 field

system(v5);

if ( dns2 )

{

 sprintf(v5, "/bin/echo nameserver %s >> /etc/resolv.conf", dns2);

 system(v5);

}

return 1;
}
return result;

Fix

OS Command Injection

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Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-12851

Affected Products

Gv-I/O Box 4E